Raja Rani is a tamil romantic comedy movie which revolves around the newly wed couple Arya and Nayanthara. The story begins with Arya and Nayanthara getting married at a church. Both have a past love life but decides to marry just to make their parents happy. As the story moves Nayanthara narrates Arya her past love with Jai and that he has died, Nayanthara too finds out that Arya had a similar past and his lover Nazriya has died in an accident through Santhanam. How the couple re discovers their long last love and decided to get along together forms the rest of the story.